The heart of the giant globular star cluster 47 Tucanae reveals the glow of 200,000 stars. In this cluster, Hubble spied a parade of young white dwarfs starting their 40-million-year migration away from the core. In globular clusters, lower mass stars rob momentum from more massive stars. Heavier stars sink to the cluster's core as their orbits slow, while lighter stars pick up speed and move across the cluster to the edge.

ABOUT PRINTSHOP IMAGES:
Each Printshop image has been adapted specifically for high-quality printing. Select the size of image you want to download. Then you can print the file from your own computer, or have an online photolab or photo store print it for you.

Some online photolabs or photo stores may ask whether this image is copyrighted, since they are not allowed to print copyrighted material. You can point them to our Copyright page. These Printshop images have no copyright restrictions.